On Mar 19, 2012, at 4:20pm, Deepak Nettem wrote: > I found that the Hadoop lib directory contains jackson-core-asl-1.0.1.jar and > jackson-mapper-asl-1.0.1.jar. > > I removed these, but got this error: > hadoop Exception in thread "main" java.lang.NoClassDefFoundError: > org/codehaus/jackson/map/JsonMappingException
Just confirming that you restarted the Hadoop daemons after removing these older Jackson jars. -- Ken > > I am using Maven as a build tool, and my pom.xml has this dependency: > > <dependency> > <groupId>org.codehaus.jackson</groupId> > <artifactId>jackson-mapper-asl</artifactId> > <version>1.5.2</version> > <scope>compile</scope> > </dependency> > > Any help would on this issue would be greatly appreciated. > > Best, > Deepak > > On Mon, Mar 19, 2012 at 6:48 PM, Deepak Nettem <[email protected]> wrote: > When I include some Avro code in my Mapper, I get this error: > > Error: > org.codehaus.jackson.JsonFactory.enable(Lorg/codehaus/jackson/JsonParser$Feature;)Lorg/codehaus/jackson/JsonFactory; > > Particularly, just these two lines of code: > > InputStream in = getClass().getResourceAsStream("schema.avsc"); > > Schema schema = Schema.parse(in); > > This code works perfectly when run as a stand alone application outside of > Hadoop. Why do I get this error? and what's the best way to get rid of it? > > I am using Hadoop 0.20.2, and writing code in the new API. -------------------------- Ken Krugler http://www.scaleunlimited.com custom big data solutions & training Hadoop, Cascading, Mahout & Solr
